Large-Scale Evaluation of Association Between Pheromone Trap Captures and Cotton Boll Infestation for Pink Bollworm (Lepidoptera: Gelechiidae)

Although transgenic cotton producing insecticidal proteins from Bacillus thuringiensis (Bt) is a cornerstone for pink bollworm control in some countries, integrated pest management remains important for bolstering sustainability of Bt cotton and is critical for controlling pink bollworm where Bt cot...

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Bibliographic Details
Published in:Journal of economic entomology 2017-06, Vol.110 (3), p.1345-1350
Main Authors: Carrière, Yves, Antilla, Larry, Liesner, Leighton, Tabashnik, Bruce E
Format: Article
Language:English
Subjects:
Agricultural practices
Animals
Arizona
Bacillus thuringiensis - chemistry
Butterflies & moths
Chemical control
Chemical pest control
Chemotaxis
control decision
Cotton
economic injury level
economic threshold
Economics
Fatty Alcohols - pharmacology
Gossypium - genetics
Gossypium - growth & development
Infestation
Insecticide resistance
Insecticides
Integrated pest management
IPM
Male
Moths - physiology
Offspring
Pest control
Pest Control, Biological - methods
Pests
Pheromone traps
Pheromones
Pheromones - pharmacology
Plants, Genetically Modified - genetics
Plants, Genetically Modified - growth & development
SAMPLING AND BIOSTATISTICS
Sprayers
Sprays
Trapping
validation
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Summary:Although transgenic cotton producing insecticidal proteins from Bacillus thuringiensis (Bt) is a cornerstone for pink bollworm control in some countries, integrated pest management remains important for bolstering sustainability of Bt cotton and is critical for controlling pink bollworm where Bt cotton is not available or where this pest has evolved resistance to Bt cotton. Here, we used data on moth captures in gossyplure-baited pheromone traps and boll infestations for 163 Bt and 152 non-Bt cotton fields from Arizona to evaluate accuracy of chemical control decisions relying on moth trapping data and capacity of Bt cotton to suppress survival of offspring produced by moths. Assuming an economic injury level of 12% boll infestation, the accuracy of decisions based on moth captures corresponding to economic thresholds of 6%, 8%, and 10% boll infestation increased from 44.7% to 67.1%. The association between moth captures and boll infestation was positive and significant for non-Bt cotton fields but was not significant for Bt cotton fields. Although chemical control decisions based on trapping data were only moderately accurate, pheromone traps could still be valuable for determining when moth populations are high enough to trigger boll sampling to more rigorously evaluate the need for insecticide sprays.
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/tox086